System connector



FIG. 1 is an upper left perspective view of a system connector according to our new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a left side view thereof; and,

FIG. 7 is a right side view thereof.

The broken line included depicts environment and is not part of the claimed design. 

The ornamental design for a system connector, as shown and described. 